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/*
* spotify.c
*
* Copyright (C) 2011-18 by ntop.org
*
* This file is part of nDPI, an open source deep packet inspection
* library based on the OpenDPI and PACE technology by ipoque GmbH
*
* nDPI is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* nDPI is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with nDPI. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "ndpi_protocol_ids.h"
#define NDPI_CURRENT_PROTO NDPI_PROTOCOL_SPOTIFY
#include "ndpi_api.h"
#include "ndpi_private.h"
static void ndpi_int_spotify_add_connection(struct ndpi_detection_module_struct *ndpi_struct,
struct ndpi_flow_struct *flow)
{
ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_SPOTIFY, NDPI_PROTOCOL_UNKNOWN, NDPI_CONFIDENCE_DPI);
}
static void ndpi_check_spotify(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
{
struct ndpi_packet_struct *packet = &ndpi_struct->packet;
u_int32_t payload_len = packet->payload_packet_len;
if(packet->udp != NULL) {
u_int16_t spotify_port = htons(57621);
if((packet->udp->source == spotify_port)
&& (packet->udp->dest == spotify_port)) {
if(payload_len >= 7) {
if(memcmp(packet->payload, "SpotUdp", 7) == 0) {
NDPI_LOG_INFO(ndpi_struct, "found spotify udp dissector\n");
ndpi_int_spotify_add_connection(ndpi_struct, flow);
return;
}
}
}
} else if(packet->tcp != NULL) {
if(payload_len >= 9 && packet->payload[0] == 0x00 && packet->payload[1] == 0x04 &&
packet->payload[2] == 0x00 && packet->payload[3] == 0x00&&
packet->payload[6] == 0x52 && (packet->payload[7] == 0x0e || packet->payload[7] == 0x0f) &&
packet->payload[8] == 0x50 ) {
NDPI_LOG_INFO(ndpi_struct, "found spotify tcp dissector\n");
ndpi_int_spotify_add_connection(ndpi_struct, flow);
}
}
NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
}
static void ndpi_search_spotify(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
{
NDPI_LOG_DBG(ndpi_struct, "search spotify\n");
ndpi_check_spotify(ndpi_struct, flow);
}
void init_spotify_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id)
{
ndpi_set_bitmask_protocol_detection("SPOTIFY", ndpi_struct, *id,
NDPI_PROTOCOL_SPOTIFY,
ndpi_search_spotify,
NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_TCP_OR_UDP_WITH_PAYLOAD_WITHOUT_RETRANSMISSION,
SAVE_DETECTION_BITMASK_AS_UNKNOWN,
ADD_TO_DETECTION_BITMASK);
*id += 1;
}
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